Not that I know of.
An easier build would be using a pre-approved list of sites known to not be ad-driven. Like, right now if you limited your search to piefed or nostr then that might avoid ads, but instead of doing it one at a time, it would be good to have a way to search a list of known sources like that all at once. This would be limited to the manually added search sources, but it's really hard to program a system to automatically find all the ad-free sources out there